4563966566 has 4 divisors (see below), whose sum is σ = 6845949852. Its totient is φ = 2281983282.

The previous prime is 4563966559. The next prime is 4563966587. The reversal of 4563966566 is 6656693654.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140991640 + ... + 1140991643.

It is an arithmetic number, because the mean of its divisors is an integer number (1711487463).

Almost surely, 2^4563966566 is an apocalyptic number.

4563966566 is a deficient number, since it is larger than the sum of its proper divisors (2281983286).

4563966566 is a wasteful number, since it uses less digits than its factorization.

4563966566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281983285.

The product of its digits is 20995200, while the sum is 56.

The square root of 4563966566 is about 67557.1355668667. The cubic root of 4563966566 is about 1658.7495501407.

The spelling of 4563966566 in words is "four billion, five hundred sixty-three million, nine hundred sixty-six thousand, five hundred sixty-six".